Atlantic Zonal Mode (Q315)

Subject, term, tag: Atlantic Zonal Mode

Atlantic Zonal Mode (AZM)

Language	Label	Description	Also known as
English	Atlantic Zonal Mode	Subject, term, tag: Atlantic Zonal Mode	Atlantic Zonal Mode (AZM)

Statements

Instance of

Category

source version

IPCC Glossary v1.5

1 reference

Source

https://apps.ipcc.ch/glossary/

date accessed

27 May 2026

Part of

Working Group I: Climate Change 2021 – The Physical Science Basis

0 references

Definition

An equatorial coupled mode in the Atlantic similar to El Niño–Southern Oscillation (ENSO) in the Pacific, and therefore sometimes referred to as the Atlantic Niño. The AZM is associated with sea surface temperature anomalies near the equatorial Atlantic and rainfall disturbances over the African monsoon domain. Its variations are mostly observed in the interannual scale. It is called also Atlantic equatorial mode. See Section AIV.2.5 in Annex IV of the AR6 WGI report. (English)